Traveler



1711167756: PH/L/P C. WENN/01er# Jan. 12, 1937. P. c. WENTWORTH TRAVELER Filed Deo. 9, 1955 Patented Jan. 12, 1937 UNI-TED STATES PATT OFFICE 14 Claims.

This invention relates to travelers for ring spinning and twisting and more particularly to a twister traveler for use with such heavy twisted yarns as the cords used in the manufacture of cord tires.

The manufacture of various styles of cord used in the manufacture of automobile tires requires a great degree of accuracy in the twisting and cabling processes in order that the cord shall be uniform in diameter, as to its cross sections, and the layers of twist shall be parallel to one another in order to give a uniformity of diameter, twist and breaking strength. To obtain such results there must be a free and unobstructed flow of the cord through the traveler at all times in the twisting operation. Should the iiow of speed of the cord be retarded or accelerated to any appreciable degree during the twisting processes unevenness detrimental to quality results.

The traveler is an important governing factor of the unobstructed passage of the cord from the bite of the roll to the bobbin upon which it is wound. In the twisting and cabling of cord of high multiple twist difficulty is encountered when the frame stops and starts. This trouble occurs because of the fact that a heavy traveler has to be used in the twisting process. Naturally the strain on the cord is greatly increased in order to move the traveler which when starting is resisting motion not only by its own weight, but by its frictional contact with the ring. This extra strain in the starting movements has a tendency to pull down the cord to a smaller diameter, which` aects also the laying of the twist in relative proportion.

To obviate this difficulty, I have devised a twister traveler with a friction fin which fin is bent in to a degree from the plane of the frictional surface of the traveler. When the twisting process comes to a stop and the strain is relieved on the cord as it is passing through the traveler and being wound on the bobbin, a slackness occurs between the traveler and the bobbin itself. This sudden relief of the strain causes the traveler to swivel slightly and the frictional contact is relieved and the traveler rests on the edge of the fm, thereby reducing the frictional contact between the traveler andl ring to the minimum. When the twisting process is again put in motion by starting the frame, the strain on the cord gradually increases as speed gathers and the traveler swivels back on its perpendicular axis to its full frictional contact with the ring, the result being that because of the relief of pull in the starting process the cord retains its uniform diameter and twist.

The nature of my invention and the advantages thereof will be more particularly set forth in the accompanying specification and drawing wherein I have shown and described operative embodiments which well illustrate the principles involved.

In such drawing:-

Fig. l is a somewhat diagrammatic indication of my traveler in operating position on the ring of a conventional twisting frame.

Fig. 2 is a perspective View of such traveler removed from' the ring.

Fig. 3 is a fragmentary plan of the traveler and ring and showing the approximate position of the traveler when operating at substantially maximum speed.

Fig. 4 is a similar view but showing the approximate position of the traveler when the twisting frame is stopped.

Fig. 5 is a diagrammatic plan section showing by means of sectioned lines the running position of the traveler and by dot and dash lines the stopped position thereof.

Fig. 6 is a section through a ring and showing a modified form of traveler having a curved friction 1in which corresponds approximately to the inside curvature of the ring I have indicated at I9 a conventional spindle upon which a conventional bobbin or other receiver Il is mounted. The spindle is rotated by any usual means as the pulley I2 and driving belt I3. The cord, yarn, or other filament I4 is drawn through the usual draft rolls I5 and guide eye I6 to the traveler Il and is laid on the bobbin I I by the traveler as it whirls about the ring I8 mounted in the usual vertically reciprocating ring rail I9.

My improved traveler follows conventional traveler design in that it has the usual shank or back 20 and upper and lower terminals 2l and 22 constituting respectively the top horn and bottom foot of the traveler, the same being suitably bent to embrace the upper and lower edges respectively of the ring I8.

My present traveler, however, is so constructed that when the twisting frame is stopped and the strain is relieved on the cord I4 said traveler automatically assumes a position wherein it offers the minimum of frictional contact to the ring so that when the frame is again started the traveler will not impose any undue strain or drag on the cord in overcoming inertia and hence will not cause the cord to be reduced toy a smaller diameter than normal during the time that the traveler is accelerating to its normal running speed on the ring, the traveler during such acceleration period gradually and automatically returning to its normal running position of full frictional contact with the ring as maximum speed is attained.

In the embodiment of my invention illustrated in Figs. 1 to 5 inclusive, my traveler has :a fin or equivalent friction portion 23 extending outwardly from the traveler back or shank at a slight angle thereto. Preferably, although not necessarily, this friction nn may be struck from the traveler shank by cutting the same along three sides and ben-ding the resultant fin or tongue angularly outwardly with reference to the traveler shank. (See Fig. 2.) Asi a result, the free edge 24 of the iin and the attached edge 25 thereof are disposed in diiferent planes.

When the traveler is operating at full speed (Fig. 3) centrifugal force plus the pull of the yarn maintains the traveler in such position on the ring that the angularly disposed iin or tongue 23 is in frictional contact with the inner surface of the ring along the lines 24 and 25. This is also shown diagrammatically in Fig. 5 wherein the running position of the traveler is shown in full lines, the plane of the traveler being substantially that indicated by the line A-A in said figure. When the frame is stopped the relief of the strain on the cord causes the traveler automatically to assume the position illustrated in Fig. 4. In this position the traveler has rocked or swiveled or turned on its vertical axis so that the free edge 24 only of the iin 23 is in frictional contact with the inner face of the ring. See also Fig. 5 wherein the stopped position of the traveler is shown in dotted lines, the plane of the traveler being substantially that indicated by the line B-B in said iigure.

Thus with the traveler contacting the ring only along the edge 2li, as in the position of Fig. 4, the frictional drag will be greatly reduced as compared with the friction exerted when the traveler is contacting the ring along both edges 24 and 25', as in the position of Fig. 3.

As a result of the traveler swiveling to the position of Fig. 4 whenever the frame stops, the traveler offers the minimum frictional drag on the ring when the frame is again started. As the strain on the cord gradually increases, the traveler is thereby caused gradually to swivel back; to the position of Fig. 3.

In the modification of Fig. 6, the fin 23' is curved on an arc corresponding substantially to the curvature of the ring so as to have full facial Contact with the ring when in the position of Fig. 3. The automatic swiveling action of the traveler from the position of Fig. 3 t0 that of Fig. 4 and return to' Fig. 3 is the same as in the embodiment of Figs. 1 to 5.

The illustrated travelers are designed fo-r operation in a clockwise direction on the ring. Where the traveler is to be run in counter-clockwise direction on the ring the n is simply bent in the reverse direction from that illustrated in Fig. 2.

Various other modifications in the construction and operation of my device may obviously be resorted to if within the spirit and scope of my' invention without departing from the limits of the appended claims.

What I therefore claim and desire to secure by Letters Patent isz- 1. A traveler for use on a vertical ring, and means comprising a part extending angularly from the traveler shank towards the ring and eilective when the traveler is stopped automatically to swing the traveler in such position relative to the ring as to produce a reduced frictional contact therebetween when the traveler is again started and effective as the traveler accelerates to speed automatically to dispose the traveler in position to produce an increased frictional Contact on the ring.

2. The traveler of claim l, said means being a tongue bent angularly from the plane of the traveler shank.

3. The traveler of claim l, said means being a rectangular tongue freed from the traveler shank along three edges and bent angularly from the plane of the shank along its fourth or unfreed edge.

4. A traveler for use on a vertical ring, said traveler having a portion thereof extending towards the inner face of the ring and constituting a fulcrum on which the traveler when stopped automatically swings to dispose the traveler in such position relative to the ring as toproduce a reduced frictional contact therebetween when the traveler is again started.

5. The traveler of claim 4, said portion extending angularly from the traveler shank.

6. The traveler of claim 4, said portion being a tongue extending angularly from the traveler shank and having a connected edge and a free edge, said tongue when the traveler is starting contacting the inner face of the ring only along its connected edge but when the traveler is running at speed contacting the inner face of the ring along both said connected edge and its y free edge.

'7. A traveler for use on a vertical ring, said traveler having a ring contacting tongue bent angularly from its shank and effective automatically to swing the traveler in a position wherein it will contact the inner face of the ring with reduced frictional contact when the traveler is started.

8. A traveler for use on a vertical ring, said traveler having a portion extending` angularly from its shank to provide a ring contacting surface which when the traveleris operating at speed on the ring contacts the inner face of the ring, with maximum frictional contact but which when the traveler is stopped causes the traveler to swing relative to the ring into a position wherein the inner face of the ring will be contacted with reduced frictional contact when the traveler is again started.

9. A traveler for use on a vertical ring, said traveler having a portion extending angularly from its shank to provide a ring contacting surface curved to correspond approximately to the curvature of the inner face of the ring and which when the traveler is operating at speed on the ring continuously contacts the inner face ofthe ring but which when the traveler is stopped causes the traveler to swing relative to the ring into a position wherein the ring will be contacted with a reduced frictional contact when the traveler is again started.

10. The traveler of claim 14, said angularly extending portion constituting a fulcrum on which the traveler automatically swings towards and away from the inner face of the ring according to whether the traveler is running on the ring or is stopped.

11. A traveler for use on a vertical ring, said traveler having an angularly disposed portion which when the traveler is running at speed on the ring contacts the inner face of the ring on more than one line of frictional contact but 75 which when the traveler is stopped contacts the ring substantially only along a single line of contact.

12. A traveler for use on a vertical ring, said traveler having a portion extending angularly from its shank which portion when the traveler is stopped contacts the inner face of the ring on substantially only a single line of frictional contact, said portion constituting a fulcrum on which the traveler swivels towards and away from the inner face of the ring according to whether the traveler is running on the ring or is stopped, and said portion when the traveler is running contacting the inner face of the ring on more than one line of contact.

13. A traveler for use on a vertical ring, said traveler having a portion extending angularly from its shank to provide a ring contacting surface which will exert a variable friction drag on the inner face of said ring according to the position of the traveler on the ring.

14. A traveler for use on a vertical ring, said traveler having a portion extending angularly from its shank to provide a surface on which the traveler may swivel towards and away from the inner face of the ring according to whether the traveler is running on the ring or is stopped and said portion in one position of the traveler contacting the inner face of the ring with reduced frictional contact and in another position of the traveler contacting the inner face of the ring with increased frictional contact.

PHILIP C. WENTWORTH. 

